CSVCronImport will allow you to import/update products, categories, users, etc., from a csv/txt/xml file or URL (like www.host.com/file.csv) and create a scheduled task to automatically update when you want.

Export your product catalog in PDF or HTML format, with 16 different document formats, configurable from the administrator (Export the list with images, special offers, attributes and combinations of products, etc.). Allows discounts by country, group of users, currency, etc.